Automatic windshield wiper



Jan. 14, 1930* A. M. GEREMIA 1,

RUTOMATIC WINDSHIELD WIPER Filed July 2, 1928 INVENTOR AlerazzderM(1"e1-em z2z ATIQRNE Patented 1.... 13, 1930 ALEXANDER I. GEREIIIA, OIWATEI RB UBY, OOHNEGIICUEI."

AU'ron'rIc wmnsnmnn wnum Application filed m a,

This invention relates to windshield wipers, and more particularly to awiper of the reciprocating type having a blade member adapted to passback and forth over the full width of the windshield.

One object of this invention is to provide a windshield wiper of theabovenature which will be operated by an electric motor which is solocated as not to obstruct the vision of the driver. 7

A further object is to provide a device of the above nature in which thewiper blade is reciprocated by an improved form of shoe member whichis'driven by a rapidly rotating cross-threaded screw rod.

A further object is to provide a reciproeating windshield wiperof theabove nature in which the screw rod is surrounded by a casing and isautomatically supplied with lubricant from its interior.

A further object is to provide a windshield wiper of the above naturewhich will beisimple in construction, inexpensive to manufacture,practically silent in operation, eas to install, ornamental inappearance, an very efficient and durable in use.

With these and other objects in view there has been illustrated on theaccompanying drawings one form in which the invention may beconveniently embodied in practice.

Fig. 1 represents a fragmentary top view, partly in section, of theimproved windshield wiper.

Fig. 2 is a fragmentary front view same.

Fig. 3 is a fragmentary front view of the same on an enlarged scale.

. Fig. 4 is a sectional view of the same taken along the line 4-4 ofFig.3.

40 Fig. 5 is a perspective view of the T-shaped guiding shoe.

Referring now to the drawings in which like reference numerals denotecorresponding parts throughout the several views, the numeral 10indicates a windshield frame having a glass windshield 11 mountedtherein. On the rear of the windshield frame at a position out of linewith the drivers vision, provision is made of an electric'motor 12, saidmotor having attaching of the 1928. Serial No. 288,682.

feet 13 secured to the windshield frame 10, as b bolts 14.

T e motor 12 has a shaft 15 adapted to be driven continuously by currentderived from any suitable source, such as a storage battery, not shown.The motor shaft 15 passes forwardly through the windshield frame 10 andis provided on its forward end with a bevel. gear 16 adapted to meshwith a larger bevel gear 17 secured on the end of a hollow screw rod'18.The bevel gears 16 and 17 are preferably protected from dust, moisture,etc., by an'angle-shaped casing member 19 secured to the front of thewindshield frame 10 and having a detachable W-shaped cover 20, asclearly shown in Figs. 1 and 2.

In order to'reciprocate a windshield wiper 42 over the front surface of,the windshield 11, the screw rod 18 is provided with a pair of crossedhelical tracks 7 18 extending throughout substantially its entirelength, said tracks serving to reciprocate a wiperactuatin T-shaped shoemember 30, most clearly s own in Fig. 5. Near both ends of the screw rod18 the tracks 18 are joined by reversing grooves 18", one of-which isclearly shown at the left in Fi 3. The screw rod 18 is preferably provied with a 'bore 21 for receiving a supply of grease or other suitablelubricant from a grease cup 22, said grease cup 22 being preferablyscrewed on one end of the screw rod 18 at the'left of an angularsupporting bracket 23.

The screw rod 18 is provided along its length with a plurality of spacedradial apertures 24 communicating with the bore 21 for permitting theinternal lubricant to pass out therethrough. The screw rod 18 isenclosed by a tubular protective casin 25 which is provided at its rearwith a pair of parallel wing sections 26 havin oppositely extendingvertical flanges 27 an 28, the slot between said sections 26 serving toslidably receive the shank 29 of the T-shaped shoe member 30. The shoemember 30 has an arcuate base 31, the sides of which are parallel toeach other for fitting within the helical tracks 18 of the screw rod 18.The base 81 of the shoe member 30 has a square rear 100 end 32 and awedge-shaped forward end 33. By means of this construction itwill beseen that the shoe member 31 is irreversible; i. e. it can travel in thehelical tracks 18 of the screw rod 18 only in the direction of itswedgeshaped forward end 33.

The shankfli) of the shoe member 30 is swiveled in a vertical block 34which has a pair of angular slots on its forward face shaped to slidablyfit over. the vertical flanges .Z'T'and 28 of the casing wing sections26. The block 34 his asocket 35 in its lower end for receivin adepending wiper-holding rod 36, said ro being held detachably-inposition b a set screw 37 The casing- 25 is attache to the upper part ofthe windshield frame 10 by t e casing member 19, the angular bracket 23,and a ZI-shaped bracket 39, the latter being secured to thecenter ofsaid windshield frame, as by screws 40 and 41. l In operation, when the'current is turned on, the electric motor 12 through the bevel gears 16and 17 will rotate the screw rod 18 speed, said casinghaving a slot inits rear" fpr guiding a reciprocating wiper-holding shoe, said screw rodbeing h0llow,'and means to automatically supply lubricant to theinterior of said screw rod, said hollow screw rod having a series ofperforations along its length'to permit the lubricant to flow out uponthe exterior surface of said screw rod within said casing.

In testimony whereof, I have afi'ixed my signature to thisspecification.

1 ALEXANDER M. GEREMIA.

at high speed continuously in one direction.

This will cause the T-slia-ped shoemember 30 to'move rapidl back andforth carrying with it the windshield wiper 42 which will reciprocateover the front surface of the windshield 10.

While there has been disclosed in this specification one form.in whichthe invention may be embodied, it is to be understood that this form isshown for the purpose of illustration only, and that the invention isnot to be limited to the specific disclosure but may be modified andembodied in various other forms without departing from its I spirit. Inshort, the invention includes all 'the modifications and embodimentscoming within the scope of the following claims.

Havingthus fully described the invention, what is claimed as new, andfor. which it is desired'to secure Letters Patent, is:

1. In a windshield wiper-of the recipro-v .cating type, a casing for-attachment to a windshield frame, a screw rod having a pair -ofcontinuous :(ppositely exte'ndin helical grooves mount to rotate in saicasin means for driving said screw rodat big speed, said casing having apair of horizontal side wings having j vertical .flanges defining a slottherebetween, a shoe member v extending thro h said slot intosaidtracks, and a wiper-hp din block havin recesses for fitting about flanes, said 0e mem her being swiveled'in'sai block.

2. In a windshield wiper ofthe reciprocating type, a casing windshieldframe, a screw rod having a airof continuous :(ppositely extendin he calgrooves mount to rotate in sai casing, means for driving'said screw redat high speed, said casing having a slot in its rear for guiding areciprocating wiper-holding for attachment'to a v

